Ray Tubes

Ray Tubes 6SN7 SELECT Vacuum Tube


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A New Dimension of Sound

The SELECT Collection not only maintains the exceptional manufacturing quality of the CORE Collection but makes a significant leap in sound quality. Engineered for audiophiles who want an immersive auditory experience, this tier far surpasses what “factory vacuum tubes” can offer. 

Make Your Good Amp Great

The SELECT Collection significantly upgrades the performance of your vacuum tube amplifier, even starter models. These vacuum tubes are engineered to enhance the hidden capabilities of your amp, transforming its output into something far beyond its original sound profile. With each vacuum tube rigorously selected by our audio engineers, the SELECT Collection ensures a profound enhancement in clarity, texture, and detail. Every note resonates with more realism, every harmony carries more emotionality, and every rhythm pulses with tighter low-end precision. 

The SELECT Vacuum Tube Difference

Despite originating from the same batches as Ray Tubes’ CORE Collection, SELECT vacuum tubes are distinguished not by automated manufacturing differences but by the expert judgment of a professional. Their engineers assess each vacuum tube individually for its sound profile, dynamics, microphonics, gain, conductance, noise, and overall performance. This human touch ensures that only vacuum tubes that meet a superior level of sonic excellence are chosen. This meticulous, engineer-led selection is what makes the SELECT Collection exceptionally reliable and capable of delivering next-level sound quality.

Gold Pins: Excellence in Every Detail

Gold pins not only add a touch of elegance but also serve a significant purpose. Gold's superior conductivity enhances signal transmission for crystal-clear sound, while its resistance to oxidation ensures long-term performance and durability. These qualities, combined with the secure contact gold provides within the socket, mean your vacuum tubes aren't just top-notch—they're built to last.

Ceramic Collar: Nothing Better Than a Classic

Sometimes, doing things the old way is better. And when it comes to building materials, there are few things older than ceramic, which has been beloved by humans for its resilience and heat resistance for over 30,000 years. Ray Tubes chose premium ceramic for the collar of the 6SN7 Select because it’s incredibly resilient against high temperatures, making it an ideal material for vacuum tubes, which can generate a lot of heat during operation. Plus, ceramic is robust against wear and tear, making it able to withstand the rigors of regular use for years to come. 

Silk-Screen Printed Logos

Even the logos deserve a special mention. Silk-screen-printed onto the tubes, they demonstrate Ray Tubes’  commitment to superior craftsmanship down to the smallest detail. This time-honored printing technique yields results that are not only aesthetically pleasing but also durable, ensuring the design work remains vibrant and intact over time.

Superior Sound, Secured

An exceptional 12-month warranty—a rarity in the world of vacuum tubes, especially NOS vacuum tubes—reflects Ray Tubes’ confidence in their vacuum tubes’ performance and durability. This warranty is your safeguard against any manufacturing defects, making sure that your investment is protected.

Product highlights

  • Hand-selected and tested
  • Gold pins for corrosion resistance and excellent conduction
  • A substantial upgrade from standard NOS tubes
  • Low noise and microphonics 
  • Fewer than 5% of the tubes commissioned for production meet our voltage, current, and sound signature standards
  • Apos 12-month warranty against manufacturing defects


  • Tube type: 6SN7
  • Socket: 8-pin

Compatible Amps

Explore Ray Tubes' Tube Amp Compatibility List

What’s included

  • Ray Tubes 6SN7 SELECT Vacuum Tube
  • Manual booklet

Help Shape Our Vacuum Tube Legacy

With the launch of our Apos Ray Vacuum Tubes, we embark on an exciting mission to create a comprehensive lineup of tubes that cater to the discerning audiophile. We view this as a collaborative journey with the audiophile community and value your feedback and support to shape our future tube lineup. Let us know what other tubes you'd like us to create.

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Featured reviews

"They reveal plenty of details...edges are quick and snappy and very precise, while tone texture is quite obvious...they're very open in high frequencies....the sensation of air and space and big soundstage is great." 

-iiWi Reviews

"It's not quite as thick and full as other tubes I've heard. It has a more airy presentation....it has more of a focus on details and resolution and tone and timbre....and it has a great width and depth and layering. I was rather impressed."

-The Honest Audiophile

"Quite a revelation. Never in the past have a heard such a significant change from stock tubes. They romanticize the sound, move away from clinical exactness and   favor a musical presentation. They provide lush tubiness." 

-Prime Audio Reviews

"Clean-sounding, dynamic, and energetic. It's got sparkle and resolution in the top end. I love the balance it brings. The bass is full and tight and full of body. A great sense of texture and clarity at the top end. I like that it's neutral-sounding."

-Passion for Sound

Apos Promise

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